The summer school offers an in-depth introduction to modern methods for analysis and interpretation of regression discontinuity (RD) designs. See Cattaneo and Titiunik (2022) for acomprehensive review of the literature. The summer school will focus mostly on methodology and empirical practice, and but it will also discuss some of the underlying statistical and econometric theory when appropriate. It will be assumed that participants have elementary working knowledge of statistics, econometrics, and program evaluation. In particular, it would be useful if participants were familiar with basic results from the treatment effects literature (Abadie and Cattaneo, 2018),but the short course will be self-contained. The material in this course builds on the following reviews and practical introductions to RD designs: Cattaneo, Titiunik and Vazquez-Bare (2017), Cattaneo, Titiunik and Vazquez-Bare (2020b),and Cattaneo, Idrobo and Titiunik (2020a, 2021). Companion software packages and replication files are available at: https://rdpackages.github.io/.